\documentclass{standalone}
\usepackage{tikz}
\usepackage{ctex,siunitx}
\setCJKmainfont{Noto Serif CJK SC}
\usepackage{tkz-euclide}
\usepackage{amsmath}
\usetikzlibrary{patterns, calc}
\usetikzlibrary {decorations.pathmorphing, decorations.pathreplacing, decorations.shapes,}
\begin{document}
\small
\begin{tikzpicture}[>=latex,scale=1.3]
  % \useasboundingbox (-0.1,0.1) rectangle(6,-3);
  \filldraw[rounded corners,brown!80!gray,draw=black](0,0.2)to[bend left=20](0.5,-4)--(-0.5,-4)to[bend left=20](0,0.2);
  \filldraw[rounded corners,brown!40!darkgray,draw=black]
  (0.1,-0.7)to[bend left=15](0.4,-3.0)--(-0.4,-3.0)to[bend left=15](-0.1,-0.7)--cycle;
  \draw[line width=2pt](0,0)--(-45:3)--(0.4,-3.5);
  \draw[thick,->](-45:1.5)--++(1,0)node[below]{$F_2$};
  \draw[thick,->](-45:1.5)--++(0,1)node[above]{$F_1$};
  \draw[thick,->](-45:1.5)--++(1,1)node[above right]{$F$};
  \draw[densely dashed,thin]([yshift=1cm]-45:1.5)--++(1,0)--++(0,-1);
  \draw[thin]([yshift=4mm]-45:1.5)arc(90:45:0.4)node[above=1mm]{\ang{45}};
  \node at(-45:1.5)[left]{$O$};
  \foreach \x in {0.5,1.5,2.5}
  {
    \draw[densely dashed,-<](-45:\x)--++(225:1.0);
    \draw[densely dashed](-45:\x)--++(225:1+\x);
  }
  \node at (-1.0,-2.8){风};
\end{tikzpicture}
\end{document}